package cn.Test1;

import java.util.Scanner;

/*本类用于复习正则表达式
* Matches(正则):当前字符串能否匹配正则表达式
* replaceAll(正则,子串):替换子串
* split(正则):拆分字符串*/
public class Regex {
    public static void main(String[] args) {
        String s = "\\b{17}[0-9a]";
        String a =new Scanner(System.in).nextLine();
        System.out.println(a.matches(s));
    }
}
